1398861434 has 8 divisors (see below), whose sum is σ = 2208728640. Its totient is φ = 662618556.

The previous prime is 1398861421. The next prime is 1398861461. The reversal of 1398861434 is 4341688931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18406034 + ... + 18406109.

It is an arithmetic number, because the mean of its divisors is an integer number (276091080).

Almost surely, 2^1398861434 is an apocalyptic number.

1398861434 is a deficient number, since it is larger than the sum of its proper divisors (809867206).

1398861434 is a wasteful number, since it uses less digits than its factorization.

1398861434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36812164.

The product of its digits is 497664, while the sum is 47.

The square root of 1398861434 is about 37401.3560449351. The cubic root of 1398861434 is about 1118.3855976447.

The spelling of 1398861434 in words is "one billion, three hundred ninety-eight million, eight hundred sixty-one thousand, four hundred thirty-four".